Data and Evidence
6th Grade Science · 11 lessons
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Lessons
- 1What Is Technology?Technology is the application of scientific knowledge to solve practical problems. From simple tools to complex computers, technology shapes how humans interact with the world.Experiment
- 2Why Biodiversity MattersBiodiversity—the variety of life in an ecosystem—makes ecosystems more resilient. Loss of biodiversity from human activities threatens ecosystem stability worldwide.Lesson
- 3Fair Tests and Controlled VariablesA fair test changes one thing at a time and holds everything else steady. If you change the ramp angle and the ball at once, a difference in distance tells you nothing about which change caused it.Experiment
- 4Choosing the Right GraphA bar chart compares separate categories; a line graph shows how one continuous quantity changes with another; a scatter plot looks for a relationship between two measurements. Choosing wrongly hides the pattern you measured.Lesson
- 5Repeats, Means and ReliabilityOne measurement can be wrong by accident. Taking three or more repeats and using the mean reduces the effect of random scatter, and comparing the repeats tells you how much to trust the mean.Experiment
- 6Reading Someone Else's DataBefore trusting a graph, check three things: what is on each axis, what the units are, and where the scale starts. A bar chart whose axis begins at 90 rather than 0 can make a tiny difference look enormous.Lesson
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